Drummondia, Lowry, 1984

Lowry, J. K. & Stoddart, H. E., 2012, The Pachynidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) 3246, Zootaxa 3246 (1), pp. 1-69 : 9

Key to Species of Drummondia

1. Maxilla 1 outer plate with 10 setal-teeth. Pereonite 5 with 3 dorsal spines................................ D. tridentata

- Maxilla 1 outer plate with 11 setal-teeth. Pereonite 5 with 1 dorsal spine.......................................... 2

2. Gnathopod 1 dactyl over-reaching palm. Uropod 3 inner ramus about 0.3 × outer ramus................... D. parviramus

- Gnathopod 1 dactyl about as long as palm. Uropod 3 inner ramus at least 0.5 × outer ramus.......................... 3

3. Mandible with molar. Pereopod 6 merus with posteroproximal shoulder..................................... D. luce

- Mandible without molar. Pereopod 6 merus without posteroproximal shoulder..................................... 4

4. Gnathopod 1 propodus length about 1.8–2.0 × breadth. Coxa 5 equilobate.................................. D. marlo

- Gnathopod 1 propodus length about 2.75 × breadth. Coxa 5 posteroventral lobe deeper than anteroventral lobe. D. corinellae